Patent US2430257A successfully refreshed from Google Patents.
US1579906A
Expired / Lapsed
US
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Pontoon
Assignee: Aeromarine Plane & Motor Co
•
Filing: 1923-07-11
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Granted: 1926-04-06
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Expires: 1943-07-11
Abstract
No abstract record available.
Inventors
- 👤 Paul G Zimmermann
- 👤 Boris V Korvin-Kroukovsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:01
CPC Classifications
B; B64; B64C; B64C35/00; B64C35/001; B64C35/003; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-04-05 | 1929-10-05 | 1930-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-04-05 | 1933-10-05 | 1934-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-04-05 | 1937-10-05 | 1938-04-06 | $7700.00 | Window Closed / Lapsed |